AndrSudo

This app generates puzzles with difficulty level between 0 and 20. The probability of generating sudokus with level greater than 0 is about 5% You can save/open your sudoku. Rules applied by generator: 1. Singles 2. Hidden singles 3. Intersection 4. Pairs 5. Triples 6. Remote pair 7. Rectangles 8. x-wing 9. Hidden pairs 10. Forcing chains 11. xy-wing 12. Nishio